Revetment



June 24, 1930.

R. O. DARK REVETMENT Filed June 14, 1928 2 Sheets-Shet l June 24, 19370. DARK 1,768,309

REVETMENT Filed June 14, 1928 2 Sheets-Sheet 2 ark Patented lune 24, 1939 urrsn r .rics

REVETMENT Application filed June 14, 1928.

This invention relates to revetments and more particularly to a device of this character which may be installed in sections and which, when installed, provides a continuous flexible mat particularly adapted for covering the banks of rivers and other uneven surfaces which are subject to attrition.

An important object of the invention is to provide in a device of this character a unit which is so constructed that it lends itself to ready installation at a predetermined location at the bottom of a body of water while, at the same time, permitting its connection to adjacent elements.

A still further object of the invention is to provide a device of this character, the sections of which may be assembled at the surface of the water and delivered to their final location by permitting the same to slide down cables or other flexible guides.

These and other objects I attain by the construction shown in the accompanying drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention and wherein Figure 1 is a plan view of a revetment constructed in accordance with my invention suitable for use where the stream bed slopes gradually 1 Figure 2 is a similar view of an arrangement for use where the stream bed slopes steeply;

Figure 3 is a side elevation of one of the elements employed;

Figure 4 is a plan view showing a slightly modified method of connecting the elements to one another.

Referring now to the drawings and more particularly to Figure 1 thereof wherein I have illustrated an arrangement of my 1nvention for use upon a river'bank wherethe water is shallow adjacent the shore, the numeral 10 generally designates the bank line and 11 a cable secured at its ends to the shore 45 by suitable anchoring devices and positioned to define the outer edge of the revetment. A second cable 12 extends along the shore line to define the inner edge of the revetment and is suitably anchored to the shore, as at 50 13. The cables 11 and 12 are connected to Serial one "another at spaced intervals by transversely extending cables 14 and 15 which are either alter may be ar nated, as shown in this figure, or ranged, as shown in Figure 4,

wherein the cables 1 1 are arranged in pairs and'the cables 15 are arranged between adacentpairs.

In combinatlon with this cable net, I employ revetment units 16 which are preferably cast from concrete and made in the form of rectangular blocks.

preferably and are fr their outer These blocks are from two to six feet long om two to four inches thick at ends and increase in thickness toward their centers to three to nine inches, dependingupon the character of the bottom upon which they are employed. The blocks 16 are arranged in series, and the series of blocks extend transversely of the revetment.

The blocks 16 of each series have their ends arranged in alinement, and the series of blocks are relation by the blocks.

maintained in. relatively spaced eyes 19 arranged at the ends of Each block in the process of manufacture is formed opening 17 is further loops 19 engaged with a common with a transversely extending which is centrally disposed and cable 15.

After the cables are placed upon the blocks, which operation will be performed upon a barge or the like, they may be slid cables 14 and down the 15 until they come to rest either against the cable 11 or against units which have been previously installed.

It will be obvious that with this structure,

the several units are pivotally connected to adjacent units at their ends and sides so that they may conform exactly to the surface upon which they finally come to rest.

ing made slightlythicker at their centers, they rapidly firmly embed themselves in the bottom so t hat they become solidlyanchored and provide a substantially continuous revetment which is impregnable to the assaults of flood Waters or eddy currents.

Where the bottom to Which the revetment i is to be applied is steeply sloping and the Water is relatively deep, the installation is preferably accomplished in the manner illustrated in Figure 2. In this figure, a

' header cable corresponding to the table 11 is arranged transversely of the stream and anchored at one end upon the shore 10. Theouter end of this cable is anchored to the shore in advance of the cable. To the cable 20, the cables 14 and 15 are connected and the installation of the blocks'is carried on, as previously described. The ends of the 7 cables 14 and'15 may be anchored to the shore line, as illustrated. The cables 14 and 15 are further connected to anchors 21 longitudinally spaced upon the shore line which serve to prevent transverse movement of these cables. Such anchors should be placed at intervals of about twenty-five feet.

Where the .cables 14 and 15 are arranged as illustrated in Figure 4, theunits 16 are connected to one another through the loops 19 by bindings 22. The ends of these pairs are engaged With the cables 15. The bind ings 22 will permit flexible movement of the units of the pairs While reducing the nunn ber of cables which must be employed.

It will be obvious that a device of this character may be cheaply and rapidly constructed and may be very easily installed. It Will also be obvious that the construction hereinbefore set forth is capable of-a certain range of change and modification Without materially departing from the spirit of the invention and I accordingly do not limit myself to such specific structure except as hereafter claimed.

I claim In a revetment, flexible elements defining the inner and outer edges of the revetment, relatively spaced transverse flexible elements secured to said first elements, a plurality of transversely extending series of precast blocks, the blocks of each series having their ends arranged in alinement and the series :5 being relatively spaced, the blocks being provided at their transverse centers withopenings for the reception of certain of said transverse elements and the blocks increasing in thickness in the direction, of their transverse centers, and reinforcing elements embedded in and extending longitudinally of the blocks and provided at their ends with eyes receiving the remainder of said transverse elements and serving to maintain the series of blocks in relatively spaced relation.

In testimony whereof I hereunto aiiix my signature.

BAY OLIVER DARK. 

